ANSC reproduction
Terms
undefined, object
copy deck
- Where are sperm produced?
- in the seminiferous tubules of the testicles
- What is the epidiymis? Where is it located? What is its function?
- a highly coiled tube held in a covering on the exterior of the testicle. It concentrates, stores, transports and facilitates the maturation of sperm cells
- What is the vas deferens? What empties into it? What does it lead into?
- a larger tube that the epidiymis empties into. to lead to the outside of the body (but has to go through urethra first)
- Where is testosterone produced? What are two names for those cells?
- in the cells between the tubules. Leydig cells and interstitial cells
- What is the free end of the penis called?
- the glans penis
- What stimulates the testicles to produce test.?
- the hypothalmus to the anterior pitutiary, which then stimulates LH and FSH.
- What effect does LH have on males?
- it stimulates the Leydig cells to produce testosterone
- What effect does FSH have on males?
- stimulates cells in the seminiferous tubules to create and nourish developing sperm
- What is sigmoind flexure? What does it allow?
- the s-shaped curve of the penis. The extension of the penis
- Where is the genetic material located on a sperm?
- on the head
- How/where does the sperm get its energy to move?
- from the midpiece
- What is the shape of an uterus? What does it do?
-
body and horns
nourishes growing fetus
expels fetus during birth - When does uteral attachment begin for sows, cows and mares?
-
sow - 13 days
cow - 22 days
mare - 37 days - Where is the site of fertiaization?
- in the oviducts
- What is the infundibulum?
- a delicate, funnel shaped tissue at the end of the oviduct that "catches" the ovum at the time of ovulation
- What hormones do the ovaries produce? What hormone does the CL produce?
-
estrogen
progesterone - Where is estrogen produced in the ovary?
- in the cells lining the antrum
- what is a follicle?
- a fluid filled structure in the ovary that contains the egg
- What is another name for a mature follicle?
- Graafian follicle
- Where does fertilization take place in cows and ewes? In gilts and mares?
-
cows and ewes - vagina
gilts and mares - cervix - Which hormones stimulate the development of the new follicle?
- LH and FSH
- What are the functions of estrogen?
-
mating behavior
uterine growth
prohibit GnRh release - Which hormone causes ovulation to occur?
- LH
- What are two other functions of LH at the time of ovulation?
-
CL formation
progesterone production - What are the functions of progesterone?
-
maintains pregnancy
mammary development
inhibits GnRH release - What is the difference between "estrus" and "estrous"?
- "estrus" (heat) is the period of time when the female will accept the male for breeding. the estrous cycle is the cycle of ovulation
- What is the length of the estrous cycle for cows, sows, ewes and mares?
-
cow - 21 days
sow - 21 days
mare - 21 days
ewe - 17 days - What is the length of gestation for a cow, sow, ewe and mare?
-
cow - 283
sow - 114
mare - 336
ewe - 147 - When does uteral attachment begin for cows, sows and mares?
-
cows - 22
sows - 13
mares - 37 - What does prostaglandin cause if there is not fertilization in the uterus?
-
regression of the CL
then progesterone goes down - What stimulates prostaglandin?
- the uterus when there is no zygote